Archivo: Fertilizer applied to corn field

Descripción: View of nitrogen fertilizer being applied to growing corn (maize) in a contoured, no-tilled field in Hardin County, Iowa. Applying smaller amounts of nitrogen several times over the growing season rather than all at once at or before planting helps the plants use the nitrogen rather than have it enter adjacent streams (i.e. create nonpoint source pollution.)
Título: Fertilizer applied to corn field
Créditos: U.S. Department of Agriculture, Natural Resources Conservation Service. Photo no. NRCSIA99241
Autor(a): Lynn Betts
Permiso: Public domainPublic domainfalsefalse This image is a work of the Natural Resources Conservation Service, part of the United States Department of Agriculture, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.
Términos de Uso: Dominio Público
Licencia: Dominio Público
¿Se exige la atribución?: No